From the answer:
Hello there, .... If the ad payments you've made to Facebook are part of your self-employed job in which you've earned out of it in return, then you can include and categorize it under Schedule C: Business Expense .

From the answer:
Using your mobile phone to scan receipts is made easy in
QuickBooks Self-Employed, Gert.... Here’s how: Go to Transactions tab and locate the transaction where you
want to attach the receipt.